Question 11 lon concentration refers to the molar concentration of an ion in sol

Question

Question 11 lon concentration refers to the molar concentration of an ion in solution. It may be identical to, or greater or less than, the molar concentration of the compound containing the ion that was used to make the solution. For soluble salts, the molarity of a particular ion is equal to the molarity of that compound times the subscript for that ion. For example, 1 M of Alcig is 1 M in A13+ and 3 M in cl 1 M of (NHA) SOA is 2 M in NH and 1 M in 2- SO Part A What is the concentration of K in 0.15 Mof K2S? Express your answer to one decimal place and include the appropriate units Value Units Submit Hints My Answers Give Up Review Part Part B lf CaCl2 is dissolved in water, what can be said about the concentration of the Ca2+ on? O It has the same concentration as the Cl ion. O Its concentration is half that of the Cl ion. O Its concentration is twice that of the Cl ion. O Its concentration is one-third that of the Cl ion. Submit Hints My Answers Give Up Review Part

Explanation / Answer

Part A

Subscript of Potassium = 2

Molarity of Compound = 0.15 M

Molarity of Potassium Ion = 2*0.15 = 0.30 M

Part B

Its concentration is half that of the Cl- ion, due to it has a 1 subscript, while the Cl- ion has a 2 subscript.

Related Questions

Navigate

• Browse (All)
• Browse Q
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.